(1978). Pittsburgh post-gazette. William Block and Paul Block, Jr..
Lua i Stíl Chicago (17ú heag.)Pittsburgh Post-gazette. [Pittsburgh, Pa.]: William Block and Paul Block, Jr., 1978.
Lua MLA (8ú heag.)Pittsburgh Post-gazette. William Block and Paul Block, Jr., 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.